7 life after mixing Pot Life (1)
.The time it takes to dry or Setting also known as Polymerization starts when the Hardener that was filling in colours such as black type 2-part color coloring amino or p.u., etc. The time it takes from the ingredients mixed And almost a Gel curing age is called Pot Life or that we called the color mix. Pot Life time will vary from a few hours to several weeks, depending on what type of coating colors
.If the quantity of the Acid-Curing mixed color. All cannot be used within the same working day. Normally, the rest will be blended with the new color combination the next day
.If so, note the following ratio Use the hand mixer combinations of extensions 1 2 new parts to eliminate the difference in its shadow, and so probably the original properties and coating performance, but if it's a color. After 3-6 hours of mixing, can not be used again.
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In each case, ask the seller about the company the best way to collect and use an individual coating company (except for the color, UV, there are no Pot life, because there are no Hardener mixing before use)
.Reactions include the chemical Polymerization is stopped when stored in cool
8. The quantity used or the Quantity Applied
The quantity that should be used for different types of coating at each company suggested colors should be upheld as guidelines only, and that we must use may be exceeded or reduced the quality of the skin that we want.
The maximum value is specified for a certain type of coating to be effective for the most part with primer and paint, 2 parts dry Ultra speed. If the coating has been applied too thick, however there may be a problem in the next step. Reduced quantity, if the quantity is the primer paint smeared on the ground floor there is a beautiful, brilliant, hazy, cloudy appearance is not
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Figure 2.5 shows how to check the consumption of paint by weighing with scales (19)
method for measuring color (17)
.The quantity mentioned in the colors that are used to measure weight relative to the other color defined as one area per square metre, use primer 100 grams per 1 sq.m. A simple method is used to verify, for example, to use the surface material or paper size 25. Multiplied by a factor of 40 cm, which is equivalent to. Dose 0.1 square meter. Weighing paper and mounted on a wooden plate before coating with blended colors. Then take a piece of the material to the surface or coating and then taken again to weigh how much results, and then multiplied by 10. (g/m2)
This verification also can make it easier. If you can expand the scale of zero (adapted to zero. When the wangkradat have not yet passed the painting to measure weight, substances that increase came only)
image 2.6 shows the digital scale model
How to spray paint a painting may be difficult to tell whether nalaek is applied to the surface of the meat, the object being sprayed. One way to gauge the quantity used is estimated test spray the surface and spray lacquer on paper one sheet. To ensure consistent results, and will be able to maintain the level of waste,
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9. curing (Drying – Curing)
drying or drying (14)
curing time is different according to the type of paint and chemicals used and differ according to the change of temperature. The circulation of air. Moisture in the air, and the quantity used
.When the color layer curing at room temperature With no heat or air circulation to help In addition to the heat and ventilation is normally active in the area. Such as night temperatures cool and humidity or excessive exposure may affect the dry process is probably incomplete curing which results in resistance to abrasion, color and effect, which is called Sticking. Or Stacking
Curing time at elevated temperatures and blended with good Ventilation ventilate or reduces the drying time and excellent results,
.Colors that are used in almost all coating work can be dried by room temperature. (37 degrees Celsius), but it will take a long time, and it requires more space in the room waiting for it to dry. So it has to find a way to make drying by adding heat to accelerate curing of UV colours, except for color, which can not be dried by heating or UV color, that is, time to dry the light bulb's energy by energy ULTRA VIOLET. UV lamp only
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